memEx/lib/memex/notes.ex
shibao 571f6fffdb
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improve tagging logic
2022-12-19 22:34:00 -05:00

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Elixir

defmodule Memex.Notes do
@moduledoc """
The Notes context.
"""
import Ecto.Query, warn: false
alias Memex.{Accounts.User, Notes.Note, Repo}
@doc """
Returns the list of notes.
## Examples
iex> list_notes(%User{id: 123})
[%Note{}, ...]
iex> list_notes("my note", %User{id: 123})
[%Note{slug: "my note"}, ...]
"""
@spec list_notes(User.t()) :: [Note.t()]
@spec list_notes(search :: String.t() | nil, User.t()) :: [Note.t()]
def list_notes(search \\ nil, user)
def list_notes(search, %{id: user_id}) when search |> is_nil() or search == "" do
Repo.all(from n in Note, where: n.user_id == ^user_id, order_by: n.slug)
end
def list_notes(search, %{id: user_id}) when search |> is_binary() do
trimmed_search = String.trim(search)
Repo.all(
from n in Note,
where: n.user_id == ^user_id,
where:
fragment(
"search @@ websearch_to_tsquery('english', ?)",
^trimmed_search
),
order_by: {
:desc,
fragment(
"ts_rank_cd(search, websearch_to_tsquery('english', ?), 4)",
^trimmed_search
)
}
)
end
@doc """
Returns the list of public notes for viewing
## Examples
iex> list_public_notes()
[%Note{}, ...]
iex> list_public_notes("my note")
[%Note{slug: "my note"}, ...]
"""
@spec list_public_notes() :: [Note.t()]
@spec list_public_notes(search :: String.t() | nil) :: [Note.t()]
def list_public_notes(search \\ nil)
def list_public_notes(search) when search |> is_nil() or search == "" do
Repo.all(from n in Note, where: n.visibility == :public, order_by: n.slug)
end
def list_public_notes(search) when search |> is_binary() do
trimmed_search = String.trim(search)
Repo.all(
from n in Note,
where: n.visibility == :public,
where:
fragment(
"search @@ websearch_to_tsquery('english', ?)",
^trimmed_search
),
order_by: {
:desc,
fragment(
"ts_rank_cd(search, websearch_to_tsquery('english', ?), 4)",
^trimmed_search
)
}
)
end
@doc """
Gets a single note.
Raises `Ecto.NoResultsError` if the Note does not exist.
## Examples
iex> get_note!(123, %User{id: 123})
%Note{}
iex> get_note!(456, %User{id: 123})
** (Ecto.NoResultsError)
"""
@spec get_note!(Note.id(), User.t()) :: Note.t()
def get_note!(id, %{id: user_id}) do
Repo.one!(
from n in Note,
where: n.id == ^id,
where: n.user_id == ^user_id or n.visibility in [:public, :unlisted]
)
end
def get_note!(id, _invalid_user) do
Repo.one!(
from n in Note,
where: n.id == ^id,
where: n.visibility in [:public, :unlisted]
)
end
@doc """
Gets a single note by slug.
Raises `Ecto.NoResultsError` if the Note does not exist.
## Examples
iex> get_note_by_slug("my-note", %User{id: 123})
%Note{}
iex> get_note_by_slug("my-note", %User{id: 123})
** (Ecto.NoResultsError)
"""
@spec get_note_by_slug(Note.slug(), User.t()) :: Note.t() | nil
def get_note_by_slug(slug, %{id: user_id}) do
Repo.one(
from n in Note,
where: n.slug == ^slug,
where: n.user_id == ^user_id or n.visibility in [:public, :unlisted]
)
end
def get_note_by_slug(slug, _invalid_user) do
Repo.one(
from n in Note,
where: n.slug == ^slug,
where: n.visibility in [:public, :unlisted]
)
end
@doc """
Creates a note.
## Examples
iex> create_note(%{field: value}, %User{id: 123})
{:ok, %Note{}}
iex> create_note(%{field: bad_value}, %User{id: 123})
{:error, %Ecto.Changeset{}}
"""
@spec create_note(User.t()) :: {:ok, Note.t()} | {:error, Note.changeset()}
@spec create_note(attrs :: map(), User.t()) :: {:ok, Note.t()} | {:error, Note.changeset()}
def create_note(attrs \\ %{}, user) do
Note.create_changeset(attrs, user) |> Repo.insert()
end
@doc """
Updates a note.
## Examples
iex> update_note(note, %{field: new_value}, %User{id: 123})
{:ok, %Note{}}
iex> update_note(note, %{field: bad_value}, %User{id: 123})
{:error, %Ecto.Changeset{}}
"""
@spec update_note(Note.t(), attrs :: map(), User.t()) ::
{:ok, Note.t()} | {:error, Note.changeset()}
def update_note(%Note{} = note, attrs, user) do
note
|> Note.update_changeset(attrs, user)
|> Repo.update()
end
@doc """
Deletes a note.
## Examples
iex> delete_note(%Note{user_id: 123}, %User{id: 123})
{:ok, %Note{}}
iex> delete_note(%Note{}, %User{role: :admin})
{:ok, %Note{}}
iex> delete_note(%Note{}, %User{id: 123})
{:error, %Ecto.Changeset{}}
"""
@spec delete_note(Note.t(), User.t()) :: {:ok, Note.t()} | {:error, Note.changeset()}
def delete_note(%Note{user_id: user_id} = note, %{id: user_id}) do
note |> Repo.delete()
end
def delete_note(%Note{} = note, %{role: :admin}) do
note |> Repo.delete()
end
@doc """
Returns an `%Ecto.Changeset{}` for tracking note changes.
## Examples
iex> change_note(note, %User{id: 123})
%Ecto.Changeset{data: %Note{}}
iex> change_note(note, %{slug: "new slug"}, %User{id: 123})
%Ecto.Changeset{data: %Note{}}
"""
@spec change_note(Note.t(), User.t()) :: Note.changeset()
@spec change_note(Note.t(), attrs :: map(), User.t()) :: Note.changeset()
def change_note(%Note{} = note, attrs \\ %{}, user) do
note |> Note.update_changeset(attrs, user)
end
end